Abstract: In paper, dynamic crosslinking was applied to epoxy resin polypropylene (PP)/ ethylene-vinyl acetate copolymer (EVA) system, and prepared the dynamic crosslinked PP/EVA blends. Effect of dynamic crosslinking on torque of PP/EVA blends was studied by Hakke Rheometer, Influence of the content of DCP and EVA on mechanical properties of dynamic crosslinked PP/EVA blends was investigated and the vicat temperature of blends was also studied. The results showed the torque of PP/EVA blends torque increased firstly and then decreased by adding DCP, the suitable content of DCP is 1 wt% according to EVA content. The impact properties of blends increase obviously, but tensile properties decrease slightly with increasing of EVA content. A small amount of dynamic crosslinked EVA particles contribute to the crystallization of the PP in the blends, and increase the vicat temperature of blends.

Key words: polypropylene, ethylene-vinyl acetate copolymer, mechanical properties, dynamic crosslinked